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authorJoseph Myers <joseph@codesourcery.com>2019-02-26 02:09:18 +0000
committerJoseph Myers <joseph@codesourcery.com>2019-02-26 02:09:18 +0000
commite0cb7b6131ee5f2dca2938069b8b9590304e6f6b (patch)
treecd451044e2bbc120225db29347b134ff1f3bbe30 /sysdeps/m68k/memcopy.h
parenta04549c19407a29a271779598a9518f9baf959e0 (diff)
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Add and move fall-through comments in system-specific code.
This patch fixes -Wimplicit-fallthrough warnings in system-specific
code that show up building glibc with -Wextra, by adding fall-through
comments, or moving existing such comments to the place required for
them to work (immediately before the case label being fallen through).

Tested with build-many-glibcs.py.

	* sysdeps/i386/dl-machine.h (elf_machine_rela): Add fall-through
	comments.
	* sysdeps/m68k/m680x0/fpu/s_cexp_template.c (s(__cexp)): Likewise.
	* sysdeps/m68k/memcopy.h (WORD_COPY_FWD): Likewise.
	(WORD_COPY_BWD): Likewise.
	* sysdeps/mach/hurd/ioctl.c (__ioctl): Likewise.
	* sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_rela):
	Likewise.
	* sysdeps/s390/iso-8859-1_cp037_z900.c (TR_LOOP): Likewise.
	* sysdeps/mips/dl-machine.h (elf_machine_reloc): Move fall-through
	comment.
	* sysdeps/mips/dl-trampoline.c (__dl_runtime_resolve): Likewise.
Diffstat (limited to 'sysdeps/m68k/memcopy.h')
-rw-r--r--sysdeps/m68k/memcopy.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/sysdeps/m68k/memcopy.h b/sysdeps/m68k/memcopy.h
index 66c39649da..aa4a1ab651 100644
--- a/sysdeps/m68k/memcopy.h
+++ b/sysdeps/m68k/memcopy.h
@@ -39,20 +39,28 @@
 	do								      \
 	  {								      \
 	    ((op_t *) dst_bp)[0] = ((op_t *) src_bp)[0];		      \
+	    /* Fall through.  */					      \
 	  case 7:							      \
 	    ((op_t *) dst_bp)[1] = ((op_t *) src_bp)[1];		      \
+	    /* Fall through.  */					      \
 	  case 6:							      \
 	    ((op_t *) dst_bp)[2] = ((op_t *) src_bp)[2];		      \
+	    /* Fall through.  */					      \
 	  case 5:							      \
 	    ((op_t *) dst_bp)[3] = ((op_t *) src_bp)[3];		      \
+	    /* Fall through.  */					      \
 	  case 4:							      \
 	    ((op_t *) dst_bp)[4] = ((op_t *) src_bp)[4];		      \
+	    /* Fall through.  */					      \
 	  case 3:							      \
 	    ((op_t *) dst_bp)[5] = ((op_t *) src_bp)[5];		      \
+	    /* Fall through.  */					      \
 	  case 2:							      \
 	    ((op_t *) dst_bp)[6] = ((op_t *) src_bp)[6];		      \
+	    /* Fall through.  */					      \
 	  case 1:							      \
 	    ((op_t *) dst_bp)[7] = ((op_t *) src_bp)[7];		      \
+	    /* Fall through.  */					      \
 	  case 0:							      \
 	    src_bp += 32;						      \
 	    dst_bp += 32;						      \
@@ -73,20 +81,28 @@
 	do								      \
 	  {								      \
 	    *--__dst_ep = *--__src_ep;					      \
+	    /* Fall through.  */					      \
 	  case 7:							      \
 	    *--__dst_ep = *--__src_ep;					      \
+	    /* Fall through.  */					      \
 	  case 6:							      \
 	    *--__dst_ep = *--__src_ep;					      \
+	    /* Fall through.  */					      \
 	  case 5:							      \
 	    *--__dst_ep = *--__src_ep;					      \
+	    /* Fall through.  */					      \
 	  case 4:							      \
 	    *--__dst_ep = *--__src_ep;					      \
+	    /* Fall through.  */					      \
 	  case 3:							      \
 	    *--__dst_ep = *--__src_ep;					      \
+	    /* Fall through.  */					      \
 	  case 2:							      \
 	    *--__dst_ep = *--__src_ep;					      \
+	    /* Fall through.  */					      \
 	  case 1:							      \
 	    *--__dst_ep = *--__src_ep;					      \
+	    /* Fall through.  */					      \
 	  case 0:							      \
 	    __nblocks--;						      \
 	  }								      \